Row sums of triangle A115154 (called Y(3,1)).

A115187

Row sums of triangle A115154 (called Y(3,1)).

Terms

    a(0) =1a(1) =5a(2) =39a(3) =346a(4) =3230a(5) =31191a(6) =309175a(7) =3129194a(8) =32211432a(9) =336239668a(10) =3551081432a(11) =37876866618a(12) =407453687104

External references